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#include "express/schema.h"

#include "express/type.h"

#include "express/expr.h"

#include "express/dict.h"

/* TODO: use enum? */

Type Type_Bad;

Type Type_Unknown;

Type Type_Dont_Care;

Type Type_Runtime;

Type Type_Binary;

Type Type_Boolean;

Type Type_Enumeration;

Type Type_Expression;

Type Type_Aggregate;

Type Type_Repeat;

Type Type_Integer;

Type Type_Number;

Type Type_Real;

Type Type_String;

Type Type_String_Encoded;

Type Type_Logical;

Type Type_Set;

Type Type_Attribute;

Type Type_Entity;

Type Type_Funcall;

Type Type_Generic;

Type Type_Identifier;

Type Type_Oneof;

Type Type_Query;

Type Type_Self;

Type Type_Set_Of_String;

Type Type_Set_Of_Generic;

Type Type_Bag_Of_Generic;

void FACTORYinitialize(void) {

/* Very commonly-used read-only types */

Type_Unknown = TYPEcreate( unknown_ );

Type_Dont_Care = TYPEcreate( special_ );

Type_Bad = TYPEcreate( special_ );

Type_Runtime = TYPEcreate( runtime_ );

Type_Enumeration = TYPEcreate( enumeration_ );

Type_Enumeration->u.type->body->flags.shared = 1;

resolved_all( Type_Enumeration );

Type_Expression = TYPEcreate( op_ );

Type_Expression->u.type->body->flags.shared = 1;

Type_Aggregate = TYPEcreate( aggregate_ );

Type_Aggregate->u.type->body->flags.shared = 1;

Type_Aggregate->u.type->body->base = Type_Runtime;

Type_Integer = TYPEcreate( integer_ );

Type_Integer->u.type->body->flags.shared = 1;

resolved_all( Type_Integer );

Type_Real = TYPEcreate( real_ );

Type_Real->u.type->body->flags.shared = 1;

resolved_all( Type_Real );

Type_Number = TYPEcreate( number_ );

Type_Number->u.type->body->flags.shared = 1;

resolved_all( Type_Number );

Type_String = TYPEcreate( string_ );

Type_String->u.type->body->flags.shared = 1;

resolved_all( Type_String );

Type_String_Encoded = TYPEcreate( string_ );

Type_String_Encoded->u.type->body->flags.shared = 1;

Type_String_Encoded->u.type->body->flags.encoded = 1;

resolved_all( Type_String );

Type_Logical = TYPEcreate( logical_ );

Type_Logical->u.type->body->flags.shared = 1;

resolved_all( Type_Logical );

Type_Binary = TYPEcreate( binary_ );

Type_Binary->u.type->body->flags.shared = 1;

resolved_all( Type_Binary );

Type_Number = TYPEcreate( number_ );

Type_Number->u.type->body->flags.shared = 1;

resolved_all( Type_Number );

Type_Boolean = TYPEcreate( boolean_ );

Type_Boolean->u.type->body->flags.shared = 1;

resolved_all( Type_Boolean );

Type_Generic = TYPEcreate( generic_ );

Type_Generic->u.type->body->flags.shared = 1;

resolved_all( Type_Generic );

Type_Set_Of_String = TYPEcreate( set_ );

Type_Set_Of_String->u.type->body->flags.shared = 1;

Type_Set_Of_String->u.type->body->base = Type_String;

Type_Set_Of_Generic = TYPEcreate( set_ );

Type_Set_Of_Generic->u.type->body->flags.shared = 1;

Type_Set_Of_Generic->u.type->body->base = Type_Generic;

Type_Bag_Of_Generic = TYPEcreate( bag_ );

Type_Bag_Of_Generic->u.type->body->flags.shared = 1;

Type_Bag_Of_Generic->u.type->body->base = Type_Generic;

Type_Attribute = TYPEcreate( attribute_ );

Type_Attribute->u.type->body->flags.shared = 1;

Type_Entity = TYPEcreate( entity_ );

Type_Entity->u.type->body->flags.shared = 1;

Type_Funcall = TYPEcreate( funcall_ );

Type_Funcall->u.type->body->flags.shared = 1;

Type_Generic = TYPEcreate( generic_ );

Type_Generic->u.type->body->flags.shared = 1;

Type_Identifier = TYPEcreate( identifier_ );

Type_Identifier->u.type->body->flags.shared = 1;

Type_Repeat = TYPEcreate( integer_ );

Type_Repeat->u.type->body->flags.shared = 1;

Type_Repeat->u.type->body->flags.repeat = 1;

Type_Oneof = TYPEcreate( oneof_ );

Type_Oneof->u.type->body->flags.shared = 1;

Type_Query = TYPEcreate( query_ );

Type_Query->u.type->body->flags.shared = 1;

Type_Self = TYPEcreate( self_ );

Type_Self->u.type->body->flags.shared = 1;

}

/** Create and return an empty scope inside a parent scope. */

Scope SCOPEcreate( char type ) {

Scope d = SCOPE_new();

d->symbol_table = DICTcreate( 50 );

d->type = type;

return d;

}

Scope SCOPEcreate_tiny( char type ) {

Scope d = SCOPE_new();

d->symbol_table = DICTcreate( 1 );

d->type = type;

return d;

}

void SCOPEdestroy( Scope scope ) {

SCOPE_destroy( scope );

}

/**

* create a scope without a symbol table

* used for simple types

Scope SCOPEcreate_nostab( char type ) {

Scope d = SCOPE_new();

d->type = type;

return d;

}

/** Create and return a schema. */

Schema SCHEMAcreate( void ) {

Scope s = SCOPEcreate( OBJ_SCHEMA );

s->enum_table = DICTcreate(50);

s->u.schema = SCHEMA_new();

return s;

}

/**

* create a type with no symbol table

Type TYPEcreate_nostab( struct Symbol_ *symbol, Scope scope, char objtype ) {

Type t = SCOPEcreate_nostab( OBJ_TYPE );

TypeHead th = TYPEHEAD_new();

t->u.type = th;

t->symbol = *symbol;

DICTdefine( scope->symbol_table, symbol->name, t, &t->symbol, objtype );

return t;

}

/**

* create a type but this is just a shell, either to be completed later

* such as enumerations (which have a symbol table added later)

* or to be used as a type reference

Type TYPEcreate_name( Symbol * symbol ) {

Scope s = SCOPEcreate_nostab( OBJ_TYPE );

TypeHead t = TYPEHEAD_new();

s->u.type = t;

s->symbol = *symbol;

return s;

}

Type TYPEcreate( enum type_enum type ) {

TypeBody tb = TYPEBODYcreate( type );

Type t = TYPEcreate_from_body_anonymously( tb );

return( t );

}

Type TYPEcreate_from_body_anonymously( TypeBody tb ) {

Type t = SCOPEcreate_nostab( OBJ_TYPE );

TypeHead th = TYPEHEAD_new();

t->u.type = th;

t->u.type->body = tb;

t->symbol.name = 0;

SYMBOLset( t );

return t;

}

TypeBody TYPEBODYcreate( enum type_enum type ) {

TypeBody tb = TYPEBODY_new();

tb->type = type;

return tb;

}

Symbol * SYMBOLcreate( char * name, int line, const char * filename ) {

Symbol * sym = SYMBOL_new();

sym->name = name;

sym->line = line;

sym->filename = filename; /* NOTE this used the global 'current_filename',

* instead of 'filename'. This func is only

* called in two places, and both calls use

* 'current_filename'. Changed this to avoid

* potential future headaches. (MAP, Jan 12)

return sym;

}

/**

** low-level function for type Entity

** \note The attribute list of a new entity is defined as an

** empty list; all other aspects of the entity are initially

** undefined (i.e., have appropriate NULL values).

Entity ENTITYcreate( Symbol * sym ) {

Scope s = SCOPEcreate( OBJ_ENTITY );

s->u.entity = ENTITY_new();

s->u.entity->attributes = LISTcreate();

s->u.entity->inheritance = ENTITY_INHERITANCE_UNINITIALIZED;

/* it's so useful to have a type hanging around for each entity */

s->u.entity->type = TYPEcreate_name( sym );

s->u.entity->type->u.type->body = TYPEBODYcreate( entity_ );

s->u.entity->type->u.type->body->entity = s;

return( s );

}

/** VARcreate

** \param name name of variable to create

** \param type type of new variable

** \return the Variable created

** Create and return a new variable.

** \note The reference class of the variable is, by default,

** dynamic. Special flags associated with the variable

** (e.g., optional) are initially false.

Variable VARcreate( Expression name, Type type ) {

Variable v = VAR_new();

v->name = name;

v->type = type;

return v;

}

Expression EXPcreate( Type type ) {

Expression e;

e = EXP_new();

SYMBOLset( e );

e->type = type;

e->return_type = Type_Unknown;

return( e );

}

/**

* use this when the return_type is the same as the type

* For example, for constant integers

Expression EXPcreate_simple( Type type ) {

Expression e;

e = EXP_new();

SYMBOLset( e );

e->type = e->return_type = type;

return( e );

}

Expression EXPcreate_from_symbol( Type type, Symbol * symbol ) {

Expression e;

e = EXP_new();

e->type = type;

e->return_type = Type_Unknown;

e->symbol = *symbol;

return e;

}

/**

** \param op operation

** \param operand1 - first operand

** \param operand2 - second operand

** \param operand3 - third operand

** \returns Ternary_Expression - the expression created

** Create a ternary operation Expression.

Expression TERN_EXPcreate( Op_Code op, Expression operand1, Expression operand2, Expression operand3 ) {

Expression e = EXPcreate( Type_Expression );

e->e.op_code = op;

e->e.op1 = operand1;

e->e.op2 = operand2;

e->e.op3 = operand3;

return e;

}

/**

** \fn BIN_EXPcreate

** \param op operation

** \param operand1 - first operand

** \param operand2 - second operand

** \returns Binary_Expression - the expression created

** Create a binary operation Expression.

Expression BIN_EXPcreate( Op_Code op, Expression operand1, Expression operand2 ) {

Expression e = EXPcreate( Type_Expression );

e->e.op_code = op;

e->e.op1 = operand1;

e->e.op2 = operand2;

return e;

}

/**

** \param op operation

** \param operand operand

** \returns the expression created

** Create a unary operation Expression.

Expression UN_EXPcreate( Op_Code op, Expression operand ) {

Expression e = EXPcreate( Type_Expression );

e->e.op_code = op;

e->e.op1 = operand;

return e;

}

/**

** \param local local identifier for source elements

** \param aggregate source aggregate to query

** \returns the query expression created

** Create a query Expression.

** NOTE Dec 2011 - MP - function description did not match actual params. Had to guess.

Expression QUERYcreate( Symbol * local, Expression aggregate ) {

Expression e = EXPcreate_from_symbol( Type_Query, local );

Scope s = SCOPEcreate_tiny( OBJ_QUERY );

Expression e2 = EXPcreate_from_symbol( Type_Attribute, local );

Variable v = VARcreate( e2, Type_Attribute );

DICTdefine( s->symbol_table, local->name, v, &e2->symbol, OBJ_VARIABLE );

e->u.query = QUERY_new();

e->u.query->scope = s;

e->u.query->local = v;

e->u.query->aggregate = aggregate;

return e;

}